Portable farm derrick



F. WALKER. PORTABLE FARM DERRICK. APPLICATION FILED R, 211. |92|. RENEWED JULY 14,1922.

Patented Nov. 7, 1922.

Patented Nov. 7, i922.

STATEfi FRED WALKER, OF IVIAESHALLTOWVN, IOWA.

PORTABLE FARM DERRICK.

Application filed March 28, 1921, Serial No. 456,450. Renewed July 14,1922. Serial No. 574,978.

it and State of Iowa, have invented certain new and useful improvements in Portable Farm Derricks, of which the following is a specification.

This invention relates to improvements in load lifting apparatus, and more particularly to a portable derrick. type for use in lifting racks of hay or for lifting a wagon body from its running gear.

An object of the invention is to provide a portable derrick or frame, equipped with a manually operated hoisting apparatus and means for engagement with a load of hay or a wagon body or the like, for elevating the same.

Another object is to provide a suitable derrick, which may be dragged around from place to place, and which may be of knockdown construction.

Other objects will appear as the description proceeds.

In the accompanying drawings which. constitute a part of my application- Figure 1 is a side elevation 01 my improved derrick;

Figure 2 is an end elevation of the same;

Figure 3 is a sectional view on line 3-3 of Fig. 1;

Figure 4.- is a sectional view on line 4-4 of Fig. 1, and

Figure 5 is a top plan View of rollers and means of attaching the same to the frame, also showing the method of attaching the ropes or cables to the said rollers.

Like characters of reference are used, through the several views to designate corresponding parts.

The lower portion of the frame is composed of the side rods or tubes 1. and the end tubes 2, held together by means of the elbows 3 at the four corners. Extending upwardly from the elbows 3 at the corners, are the our end tubes 4, which terminate at their ends in the upper elbows 5. Connecting the elbows 5, are the side tubes 6 and end. tubes 7, completing the rectangular shaped frame of the derrick.

Midway along the vertical tubes 4:, are the sockets 8, which receive the side bracing tubes 9.

lositioncd. on one side of the frame and between the tubing 1 and 6, are the bracket members 10, which extend upwardly from the tube 1 for a considerable distance parallel with each other, and at a point adjacent the tube 6, are bowed outward as at 1.1, and are formed with the yokes 1.2 and flanges or cars id at their free ends. The lower ends of said brackets 10 are bent at right angles as at 14;, and are provided with the yokes 15 to engage and seat on the tube 1.. The bolts 16 pass through the yokes 15 and through the tube 1, to hold the bracket members 10 in position.

Extending between the parallel portions of the bracket members 10, is a shaft 17, the same being provided with the collar 18, and carries the large gear wheel 19. The collar 20 is placed on the shaft 17, after which the shaft is inserted between the members 10, and the clamping washer 21 put on and held in locked position, by means of the nut 22.

Positioned above the shaft 17, is the shaft 23, which carries the gear wheel 24; and

sprocket wheel 25, and is further provided with the collar 26. This shaft is also positioned between the members 10, and has the washer 2'? similar to the one on the shaft 17,. and locking washer 28 and nut 29. A. chain 30 connects the wheels 19 and 25. A handle 31 is attached to the wheel 19 for operating the same.

Mounted across the top of the frame, are the rollers 32, which are held in position by means of the bearing plates 38, which in turn is provided with the cars 3%, which lie adjacent the cars 13 of the bracket members if), and receive the bolts 35 tor holding the whole in operative position. Attached to the ends of the rollers are the small gears 36, which mesh with the gear wheel 241:, and. which. rotate when the wheel 19 is rotated by means of the handle 31.

The ropes or cables 37 are attached to the rollers 32, and pass through the pulleys 38, which are positioned on the tubes 7. The pointed rods 39 and rings 40 are carried at the terminals of the cables 37, by means of which a wagon body or rack of hay may be held, so that when the pulleys and gearing are operated, the load will be lifted. The clevis 41 is attachedv to the frame for pulling the derrick from place to place as desired.

litany minor changes in detail of description may be resorted to without departure from the spirit oi. the invention.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is 1. A portable derrick comprising a tubular frame, parallel bracket members at the side of said frame, a sprocket wheel journaled between said members, a second and smaller sprocket wheel positioned above said first wheel and journale'd between said members, a chain connecting said sprocket wheels, rollers mounted on top of said frame, gear wheels carried by said rollers, a gear wheel adjacent said smaller sprocket wheel positioned on the same shaft, and said gear Wheels carried by the rollers beingin mesh with said large gear wheel.

2. A portable derrick comprising a tubular frame, substantially parallel bracket 'members, a pair of shafts journaled between said members, sprocket wheels carried by said shafts, a gear wheel carried by one of said shafts, a pair of rollers rotatably mounted on said frame, gear wheels carried by said rollers, said gear wheels in mesh with said first mentioned gear wheel, and means for operating the same.

3. A portable derrick comprisin a tubular frame, rollers mounted on said frame, cable's attached to said rollers, rings in the free ends of said cables, means connecting said rings,

spaced bracket members at the side of said frame, means for attaching the lower ends of said members to said frame, said members being bowed outwardly near their upper ends and provided with forked end portions, and bearing plates cooperable with said bracket members for holding said rollers in operative position.

i. A portable derrick comprising a tubular frame, rollers mounted on said frame, pulleys positioned at the opposite ends of said frames, cables connected to said rollers and passing through said pulleys, engaging means carried by the free ends of said cables, spaced bracket members connecting the upper and lower bars of said frame, gearing carried by said bracket members, and means connecting said gearing with said rollers, whereby the whole may act as a derrick.

A portable derrick comprising a tubu l'ar frame, rollers detachably mounted on said frame, pulleys positioned at the opposite ends of said frame, cables connected to said rollers and passing through said pulleys, engaging means carried at the free ends of said cables, bracket members at fl is side of said frame, means carried by said members for operating said rollers, and means attached to said frame for moving the same from place to place.

In testimony whereof I affix my signature.

FRED lVALKER. 

